Susan asked me for the tut that I used to do a flower sketch in my gallery.Here it isIt originaly came from Anita/ Westie mom nothing that I wrote.

Ctrl J to copyCtrl +shift+U to remove colorCtrl J to copy the black and white layer. On this layer Ctrl I to invert.change the blend mode to on the inverted layer to color dodge.Go to filter, other, minimum. I used about 4

Now go back to the original layer with the colorCtrl J to copydrag that layer to the top and reduce the opacity.Merge the top three layers so you're left with 2 layers.Ctrl J to copyGo filter, artistic, poster edgesplay with the opacity until you have something you like.